Solutions by everydaycalculation.com
1st number: 2 1/10, 2nd number: 9 0/10
2110 - 9010 is -6910.
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Related: 42/10-90/10 21/20-90/10 21/10-90/20 63/10-90/10 21/30-90/10 21/10-90/30 21/50-90/10 21/10-90/50 21/70-90/10 21/10-90/70
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